Humidification and air cleaning apparatus

ABSTRACT

Provided is a humidification and air cleaning apparatus. The humidification and air cleaning apparatus includes a water tank storing water, a visual body forming at least a portion of the water tank and formed of a transparent material, a water tank inlet formed at the water tank and communicating the inner and outer sides of the water tank, a water tank humidification medium covering the water tank inlet, formed of a water absorbing material, and providing humidification on air passing through the water tank inlet, a watering housing disposed inside the water tank, drawing water of the water tank into the inside, pumping the drawn water upwardly when rotating, and spraying the pumped water, a watering motor providing a torque to the watering housing, a lower nozzle disposed at the watering housing and spraying the pumped water to the water tank humidification medium, and a upper nozzle disposed at the watering housing and spraying the pumped water to the visual body.

CROSS-REFERENCE TO RELATED APPLICATIONS

This U.S. non-provisional patent application claims priority under 35 U.S.C. §119 of U.S. Provisional Application Nos. 62/248,463 filed Oct. 30, 2015 and 62/355,118 filed Jun. 27, 2016 and Korean Patent Application Nos. 10-2015-0156254 filed Nov. 7, 2015, 10-2016-0037235 filed Mar. 28, 2016 and 10-2016-0083074 filed Jun. 30, 2016, the entire contents of which are hereby incorporated by reference.

BACKGROUND OF THE INVENTION

The present invention disclosed herein relates to an apparatus for both humidification and air cleaning.

Air conditioning apparatuses include air conditioners that control the temperature of air, air cleaners that remove foreign substances from air to maintain air cleanliness, humidifiers that increase humidity in the air, and dehumidifiers that reduce humidity in the air.

Typical humidifiers are classified into a vibration type which atomizes water on a vibrating plate and discharges it into air and a natural evaporation type that evaporates water in a humidification filter.

The natural evaporation type of humidifier is classified into a disc type of humidifier which rotates a disc using a driving force and allows water to naturally evaporate from the surface of the disc in the air and a humidification filter type of humidifier which allows water to naturally evaporate from a wet humidification medium by flowing air.

In a typical humidifier, a portion of flowing air during the humidification process is filtered by a filter. However, since the main function of a typical humidifier is a humidification function, its air cleaning function is weak.

Also, since a typical humidifier has a structure in which the humidification process is performed by adding a filtration function, a typical humidifier cannot be operated only for air filtration.

Accordingly, even in a situation where humidity is high, a typical humidifier inevitably performs humidification even thought a user desires air cleaning.

SUMMARY OF THE INVENTION

The present invention provides a humidification and air cleaning apparatus which can separately operate a humidification function and an air cleaning function.

The present invention also provides a humidification and air cleaning apparatus which can allow a user to intuitively check with his/her eyes whether humidification is performed.

The present invention also provides a humidification and air cleaning apparatus for effectively wetting a water tank humidification medium.

The present invention also provides a humidification and air cleaning apparatus for preventing water from dropping from a water tank humidification medium to the outside.

The present invention also provides a humidification and air cleaning apparatus for providing a raindrop prevention flow passage that guides water into a water tank.

The objectives of the present invention are not limited to the above-mentioned objectives, and other objectives that are not mentioned will be clearly understood by persons skilled in the art from the following description.

Embodiments of the present invention provide humidification and air cleaning apparatuses including: a water tank storing water; a visual body forming at least a portion of the water tank and formed of a transparent material; a water tank inlet formed at the water tank and communicating the inner and outer sides of the water tank; a water tank humidification medium covering the water tank inlet, formed of a water absorbing material, and providing humidification on air passing through the water tank inlet; a watering housing disposed inside the water tank, drawing water of the water tank into the inside, pumping the drawn water upwardly when rotating, and spraying the pumped water; a watering motor providing a torque to the watering housing; a lower nozzle disposed at the watering housing and spraying the pumped water to the water tank humidification medium; and a upper nozzle disposed at the watering housing and spraying the pumped water to the visual body.

In some embodiments, the upper nozzle may be located higher than the lower nozzle.

In some embodiments, the upper nozzle may be located higher than the water tank inlet.

In some embodiments, the lower nozzle may be located higher than the water tank.

In some embodiments, the visual body may be located higher than the watering inlet.

In some embodiments, water sprayed from the upper nozzle may flow down to a lower side of the visual body and wet the water tank humidification medium.

In some embodiments, water sprayed from the lower nozzle may wet the water tank humidification medium, and then flow down to the water tank.

In some embodiments, a lower end of the water tank humidification medium may overlap an upper end of the water tank, and the lower nozzle may spray water to the overlapping portion.

In some embodiments, the humidification and air cleaning apparatuses may further include a water tank humidification medium housing where the water tank humidification medium is installed, wherein the water tank humidification medium may be separably mounted at the water tank.

In some embodiments, the humidification and air cleaning apparatuses may further include a water tank humidification housing where the water tank humidification medium is installed, wherein the water tank humidification medium may be separably mounted at the visual body.

In some embodiments, the humidification and air cleaning apparatuses may further include a water tank humidification housing where the water tank humidification medium is installed, wherein an upper end of the water tank humidification medium housing may be mounted at the visual body and its lower end may overlap an upper end of the water tank.

In some embodiments, a lower end of the water tank humidification medium housing may be located inside the water tank.

In some embodiments, a storage space temporarily storing stored water may be formed at a lower side of the water tank humidification housing and the lower nozzle may spray water to the storage space.

In some embodiments, the storage space may overlap the water tank and may be located at an inner side of the water tank.

In some embodiments, the lower end of the water tank humidification medium may be located at the storage space.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a further understanding of the present invention, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present invention and, together with the description, serve to explain principles of the present invention. In the drawings:

FIG. 1 is a perspective view illustrating a humidification and air cleaning apparatus according to a first embodiment of the present invention;

FIG. 2 is an exploded perspective view of FIG. 1;

FIG. 3 is an exploded front view of FIG. 1;

FIG. 4 is an exploded cross-sectional view of FIG. 3;

FIG. 5 is a view illustrating an air flow of the humidification and air cleaning apparatus according to the first embodiment of the present invention;

FIG. 6 is a perspective view illustrating the humidification module shown in FIG. 2 when seen from the lower side;

FIG. 7 is a front view of the humidification module shown in FIG. 2;

FIG. 8 is a cross-sectional view taken along a line A-A of FIG. 7;

FIG. 9 is a left cross-sectional view of the humidification module shown in FIG. 2;

FIG. 10 is a cross-sectional view taken along a line B-B of FIG. 9;

FIG. 11 is a plan view illustrating the mounting body shown in FIG. 2;

FIG. 12 is a cross-sectional view taken along a line C-C of FIG. 11;

FIG. 13 is a perspective view illustrating a first coupler shown in FIG. 12;

FIG. 14 is a perspective view when seen from the lower side of FIG. 13;

FIG. 15 is a side sectional view of FIG. 13;

FIG. 16 is a perspective view of a second coupler shown in FIG. 8;

FIG. 17 is a perspective view of FIG. 16 viewed from bottom;

FIG. 18 is a side sectional view of FIG. 16;

FIG. 19 is an enlarged view of D shown in FIG. 8;

FIG. 20 is an enlarged view of E shown in FIG. 8;

FIG. 21 is an enlarged view of F shown in FIG. 8;

FIG. 22 is an enlarged view of G shown in FIG. 8;

FIG. 23 is a cross-sectional view taken along a line K-K of FIG. 10;

FIG. 24 is a cross-sectional view taken along a line L-L of FIG. 10;

FIG. 25 is a perspective view illustrating an installation state of a watering housing shown in FIG. 4;

FIG. 26 is a front view of FIG. 25;

FIG. 27 is a cross-sectional view taken along a line M-M of FIG. 26;

FIG. 28 is a plan view of FIG. 25;

FIG. 29 is an exploded perspective view illustrating a watering housing shown in FIG. 25;

FIG. 30 is a perspective view when seen from the lower side of FIG. 29;

FIG. 31 is a front view of FIG. 29;

FIG. 32 is a cross-sectional view taken along a line N-N of FIG. 31;

FIG. 33 is an exploded perspective view illustrating a power transmission shaft and a bushing shown in FIG. 29;

FIG. 34 is a front view of FIG. 33;

FIG. 35 is a cross-sectional view taken along a line O-O of FIG. 33;

FIG. 36 is a perspective view illustrating the water tank humidification medium housing shown in FIG. 4;

FIG. 37 is a perspective view when seen from the lower side of FIG. 36;

FIG. 38 is a front view of FIG. 36;

FIG. 39 is a cross-sectional view taken along a line B-B of FIG. 38;

FIG. 40 is an enlarged view of the humidification medium fixing means shown in FIG. 39;

FIG. 41 is an enlarged view of a raindrop prevention flow passage shown in FIG. 39;

FIG. 42 is a partial exploded perspective view of FIG. 36;

FIG. 43 is a perspective view when seen from the lower side of FIG. 42;

FIG. 44 is a front view of FIG. 42; and

FIG. 45 is a cross-sectional view taken along a line D-D of FIG. 44.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

Advantages and features of the present invention, and implementation methods thereof will be clarified through following embodiments described with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. Further, the present invention is only defined by scopes of claims Like reference numerals refer to like elements throughout.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating a humidification and air cleaning apparatus according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of FIG. 1. FIG. 3 is an exploded front view of FIG. 1. FIG. 4 is an exploded cross-sectional view of FIG. 3. FIG. 5 is a perspective view when seen from the lower side of FIG. 2.

A humidification and air cleaning apparatus according to an embodiment of the present invention may include a clean module 100 and a humidification module 200 disposed over the clean module 100.

The clean module 100 may take in and filter external air, and may provide filtered air to the humidification module 200. The humidification module 200 may be supplied with filtered air, may perform humidification to provide moisture, and may discharge humidified air to the outside.

The humidification module 200 may include a water tank 30 for storing water. The water tank 30 may be separable from the clean module 100 when the humidification module 200 is separated. The humidification module 200 may be disposed over the air clean module 100.

A user can separate the humidification module 200 from the clean module 100, and can clean the humidification module 200 that is separated. A user may also clean the inside of the clean module 100 from which the humidification module 200 is separated. When the humidification module 200 is separated, the upper surface of the clean module 100 may be opened to a user. The clean module 100 may be cleaned after separately removing a filter assembly 10 described later.

A user may supply water into the humidification module 200. The humidification module 200 may have a water supply flow passage formed therein to supply water from the outside to the water tank 30.

The water supply flow passage may be configured to supply water into the water tank 300 at any moment. For example, even when the humidification module 200 is operating, water can be supplied through the water supply flow passage. For example, even when the humidification module 200 is coupled to the clean module 100, water can be supplied through the water supply flow passage. For example, even when the humidification module 200 is decoupled from the clean module 100, water can be supplied through the water supply flow passage.

The clean module 100 and the humidification module 200 may be connected to each other through a connection flow passage 103. Since the humidification module 200 is separable, the connection flow passage 103 may be distributedly formed at the clean module 100 and the humidification module 200.

The connection flow passage formed in the clean module 100 may be defined as a clean connection flow passage 104, and the connection flow passage formed in the humidification module 200 may be defined as a humidification connection flow passage 105. When the humidification module 200 is mounted on the clean module 100, for the first time, the connection flow passage may be connected and the flow passage of air may be configured accurately.

The flow of air passing through the clean module 100 and the humidification module 200 will be described in more detail later.

A configuration of the clean module 100 will be described in more detail as follows.

The clean module 100 may include a base body 110 where an intake flow passage 101 and a clean connection flow passage 104 are formed, a filter assembly 10 disposed detachable from the base body 110 and performing filtration on flowing air, and an air blowing unit 20 disposed inside the base body 110 and flowing air.

External air may be entered into the inside of the base body 110 through the intake flow passage 101. The air filtered in the filter assembly 10 may be provided to the humidification module 200 through the clean connection flow passage 104.

In this embodiment, the base body 110 may be configured with two parts.

The base body 110 may include the lower body 130 defining the exterior thereof and having an inlet hole 110 formed in the undersurface thereof, and the mounting body 120 defining the exterior thereof and coupled to the upper side of the lower body 130.

A display module 160 may be disposed in at least one of the clean module 100 or the humidification module 200 to display the operational state to a user. In this embodiment, the display module 160 may be disposed in the base body 110 to display the operational state of the humidification and air cleaning apparatus to a user.

The mounting body 120 and the lower body 130 may be assembled integrally. Unlike this embodiment, the mounting body 120 and the lower body 130 may be manufactured as one.

The humidification module 200 may be detachably mounted on the upper side of the mounting body 120 and support the weight of the humidification module 200.

The mounting body 120 may provide a structure where the water tank 30 is mounted stably. The mounting body 120 may have a structure where the water tank 30 of the humidification module 200 is separable. The mounting body 120 may have a concave structure for receiving the water tank 30.

The mounting body 120 may be convavely formed inside the base body 110 and the water tank 30 may be received inside the base body 110. Through this, the center of gravity of an air cleaner may be further moved to the lower side.

An air cleaner according to this embodiment may receive power through the clean module 100 and provide power to the humidification module 200 through the clean module 100. Since the humidification module 200 has a structure separable from the clean module 100, the clean module 100 and the humidification module 200 may be provided with a separable power supply structure.

Since the clean module 100 and the humidification module 200 are assembled through the mounting body 120, a connector 260 may be disposed in the mounting body 120 to provide power for the humidification module 200. A top connector 270 may be disposed in the top cover assembly 230, and may be separably connected to the connector 260. When the top cover assembly 230 is placed, the top connector 270 may be disposed over the connector 260. The top cover assembly 230 may be supplied with electricity from the connector 260 via the top connector 270.

The filter assembly 10 may be assembled to be detachable from the base body 110.

The filter assembly 10 may provide the filtering flow passage 102, and may filter external air.

The filter assembly 10 may have a structure that is detachable from the base body 110 in a horizontal direction. The filter assembly 10 may be disposed so as to cross the flowing direction of air that flows upstream in a vertical direction. The filter assembly 10 may be disposed in a horizontal direction orthogonal to the flow of air flowing from the lower side to the upper side.

The filter assembly 10 may slide in a horizontal direction with respect to the base body 110.

The air blowing unit 20 may generate flowing of air. The air blowing unit 20 may be disposed inside the base body 110, and may allow air to flow from the lower side to the upper side.

The air blowing unit 20 may include a blower housing 150, a blower motor 22, and a blower fan 24. In this embodiment, the blower motor 22 may be disposed at an upper side, and the blower fan 24 may be disposed at a lower side.

The blower housing 150 may be disposed inside the base body 110. The blower housing 150 may provide a flow passage of flowing air. The blower motor 22 and the blower fan 24 may be disposed in the blower housing 150.

The blower housing 150 may be disposed over the filter assembly 10, and may be disposed under the mounting body 120.

The blower fan 24 may be a centrifugal fan, and may admit air from the lower side thereof and discharge air to the outside in a radial direction. The blower fan 24 may discharge air to the upper side and the outside in a radial direction. The outer end of the blower fan 24 may be disposed to direct to the upper side in a radial direction.

The blower motor 22 may be disposed over the blower fan 24 to minimize contact with flowing air. The blower motor 22 may not be located on an air flow passage by the blower fan 24.

The humidification module 200 may include a water tank 30, a watering unit 40, a humidification medium 50, a visual body 210, and a top cover assembly 230. The water tank 30 may store water for humidification, and may be detachably disposed over the clean module 100. The watering unit 40 may be disposed in the water tank 30, and may spray water in the water tank 30. The humidification medium 50 may be wetted with water sprayed from the watering unit 40, and may provide moisture to flowing air. The visual body 210 may be coupled to the water tank 30, and may be formed of a transparent material. The top cover assembly 230 may be detachably disposed over the visual body 210, and may include a discharge flow passage 107 through which air is discharged and a water supply flow passage 109 through which water is supplied.

The water tank 30 may be mounted on the mounting body 120. The watering 40 may be disposed inside the water tank 30, and may rotate inside the water tank 30.

The watering unit 40 may draw water inside the water tank 30, upwardly pump the drawn water, and then spray the pumped water toward the outside in a radial direction. The watering unit 40 may include the watering housing 800 that draws water, upwardly pumps drawn water, and then sprays pumped water toward the outside in a radiation direction.

Water sprayed from the watering housing 800 may wet the humidification medium 50. Water sprayed from the watering housing 800 may be sprayed toward at least one of the visual body 210 and the humidification medium 50.

In this embodiment, the watering housing 800 may spray water to the inner side surface of the visual body 210, and sprayed water may flow down along the inner side surface of the visual body 210. Droplets formed in a form of water drop may be formed on the inner side surface of the visual body 210, and a user can see droplets through the visual body 210.

The visual body 210 may be coupled to the water tank 30, and may be located over the water tank 30. At least a portion of visual body 210 may be formed of a material through which a user can see the inside.

The droplet formed at the inner side surface of the visual body 210 may implement a raindrop shape. The droplet flowing down from the visual body 210 may wet the humidification medium 50.

A display module 160 may be disposed outside the visual body 210. The display module 160 may be coupled to any one of the visual body 210 and the mounting body 120. In this embodiment, the display module 160 may be disposed at the mounting body 120.

When the humidification module 200 is placed, the outer surface of the visual body 210 may adhere closely to the display module 160. At least a portion of the surface of the display module 160 may be formed of a material that reflects light.

Droplets formed on the visual body 210 may also be projected onto the surface of the display module 160. Accordingly, a user can observe the motion of droplets at both visual body 210 and display module 160.

The water tank 30 may include a water tank inlet 31 through which air passes. The air supplied from the clean module 100 may flow into the humidification module 200 through the water tank inlet 31.

The humidification medium 50 may include a water tank humidification medium 51 disposed at the connection flow passage 103, and a discharge humidification medium 55 disposed at the discharge flow passage 107.

The water tank humidification medium 51 may be disposed on the connection flow passage 103 and in this embodiment, may be disposed at the water tank inlet 31 of the water tank 30. The water tank humidification medium 51 may be disposed inside the water tank inlet 31 and provide humidification on air passing through the water tank inlet 31.

The water tank humidification medium 51 may cover the water tank inlet 31, and air may penetrate the water tank humidification medium 51 to flow into the water tank 30.

The discharge humidification medium 55 may be disposed on the discharge flow passage 107. The discharge humidification medium 55 may be disposed on at least one of the visual body 21 or the top cover assembly 230. In this embodiment, the discharge humidification medium 55 may be disposed at the top cover assembly 230.

The discharge humidification medium 55 may cover the discharge flow passage 107, and air may penetrate the discharge humidification medium 55 to flow to the outside of the top cover assembly 230.

Hereinafter, the flow of air will be described with reference to the accompanying drawings.

When the air blowing unit 20 operates, external air may flow into the base body 110 through the intake flow passage 101 formed at a lower side of the base body 110. Air entered through the intake flow passage 101 may pass the clean module 100 and the humidification module 200 while moving upward, and may be discharged to the outside through the discharge flow passage 107 formed at an upper side of the humidification module 200.

The air entered to the intake flow passage 101 may pass through the filtering flow passage 102 of the filter assembly 10. As the air passes through the filtering flow passage 102, the filter assembly 10 may filter external air.

Air passing the filtering flow passage 102 may flow to the connection flow passage through the air blowing unit 20. After the air passing through the filtering flow passage 102 is pressed by the blower fan 24, it flows to the connection flow passage 103 along the blower fan housing 150.

Since the air blowing unit 20 is disposed next to the filtering flow passage 102, adherence of foreign substances like dust on the blower fan 24 can be minimized.

If the air blowing unit 20 is disposed before the filtering flow passage 102, foreign substances may be attached to the blower fan 24, and due to this, a cleaning cycle may be shortened.

Also, since the air blowing unit 20 is disposed at the front of the humidification flow passage 106, adherence of moisture on the surface of the blower fan 24 can be minimized. When moisture adheres to the surface of the blower fan 24, foreign substances may adhere to the surface of the blower fan 24 or molds may be likely to grow on the blower fan 24.

Since the air blowing unit 20 is disposed between the filtering flow passage 102 and the humidification flow passage 106, the adherence of foreign substances may be minimized and the flow pressure of air may be provided appropriately.

The connection flow passage 103 may include the clean connection flow passage 104 formed in the clean module 100 and the humidification connection flow passage 105 formed in the humidification module 200.

When the humidification module 200 is placed on the mounting body 120, the clean connection flow passage 104 and the humidification connection flow passage 105 may be connected to each other. When the humidification module 200 is in a separated state, the clean connection flow passage 104 and the humidification connection flow passage 105 may be exposed to the outside.

The clean connection flow passage 104 may be formed in the mounting body 120, and the humidification connection flow passage 105 may be formed in the humidification module 200.

The clean connection flow passage 104 and the humidification connection flow passage 105 may also be formed in a form of duct to form a clear flow passage. In this embodiment, when the connection flow passage 103 is distributed as a partial structure of the mounting body 120 and a partial structure of the water tank 30 and the humidification module 200 is mounted on the mounting body 120, the connection flow passage 103 may be formed.

In this embodiment, the mounting body 120 may provide the outer structure of the connection flow passage 103 and the water tank 30 may provide the inner structure of the connection flow passage 103.

That is, the connection flow passage 103 may be formed between the outside of the water tank 30 and the inside of the mounting body 120. Therefore, the connection flow passage 103 may be formed between the water tank 30 and the mounting body 120. The water tank 30 may form an inner wall of the connection flow passage 103 and the mounting body 120 may form an outer wall of the connection flow passage 103.

In such a manner, the structure of the connection flow passage 103 may minimize a structure for forming a flow passage through a distributed arrangement. The connection flow passage 103 may be formed in a vertical direction.

Air passing through the connection flow passage 103 may flow into the humidification flow passage 106. The humidification flow passage 106 may be a section where moisture is supplied. In this embodiment, the humidification flow passage 106 may be a flow passage from the water tank humidification medium 51 to the discharge humidification medium 55.

While air passes through the water tank humidification medium 51, moisture may be supplied to the air in the connection flow passage 51. Then, water drops scattered from the watering unit 40 and moistures evaporated from the water tank 30 may be provided into the water tank 30.

As air passes through the discharge humidification medium 55, moisture may be supplied again to the air in the water tank 30.

Moisture may be supplied in the humidification flow passage 106 through the water tank humidification medium 51, the inside of the water tank 30, and the discharge humidification medium 55.

Air passing through the discharge humidification medium 55 may be exposed to the outside through the discharge flow passage 107.

FIG. 6 is a perspective view illustrating the humidification module shown in FIG. 2 when seen from the lower side. FIG. 7 is a front view of the humidification module shown in FIG. 2. FIG. 8 is a cross-sectional view taken along a line A-A of FIG. 7. FIG. 9 is a left cross-sectional view of the humidification module shown in FIG. 2. FIG. 10 is a cross-sectional view taken along a line B-B of FIG. 9. FIG. 11 is a plan view illustrating the mounting body shown in FIG. 2. FIG. 12 is a cross-sectional view taken along a line C-C of FIG. 11.

Referring to the drawing, the watering unit 40 may rotate the watering housing 800 disposed inside the water tank 30 and spay water stored inside the water tank 30 to the inner side surface of the visual body 210 through the rotation of the watering housing 800.

The watering unit 40 may provide a structure for rotating the watering housing 800. The watering unit 40 may provide a power transmission module 600 for delivering power to the watering housing 800 in a separable structure of the water tank 30 and the upper body 120.

A structure of the watering unit 40 will be described in more detail as follows.

The watering unit 40 may include the watering housing 800, a watering motor 42, and the power transmission module 600.

The watering unit 40 may include a watering housing 800 disposed inside the water tank 30, drawing the water of the water tank 30 into the inside as rotating, pumping the drawn water upwardly, and discharging the pumped water to the outside, a watering motor 42 for providing a torque to the watering housing 800, and a power transmission module 600 for delivering a torque of the watering motor 42 to the watering housing 800.

After pumping the water stored in the water tank 30 upwardly, the watering housing 800 may have a configuration for spraying the pumped water to the outside in a radial direction.

The watering motor 42 may have a configuration for providing a torque for rotating the watering housing 800.

The power transmission module 600 may have a configuration for transmitting a torque of the watering motor 42 to the watering housing 800.

The watering housing 800, the watering motor 42, and the power transmission module 600 may be all installed at the water tank 30. In this case, a user may be required to lift the watering motor 42 when separating the humidification module 200. Additionally, in a case that even the watering motor 42 is assembled to the humidification module 200, if the humidification module 200 is required to be separated from the clean module 100, the power supply structure of the watering motor 42 should be separable.

Therefore, this embodiment may suggest a structure where the heavy watering motor 42 is disposed at the mounting body 120 and only the watering housing 800 and the power transmission module 600 are separated. A structure as in this embodiment may minimize the weight of the separable humidification module 200.

In this embodiment, the watering housing 800 and the watering motor 42 may be separable. The watering housing 800 may be installed inside the humidification module 200, and the watering motor 42 may be installed inside the clean module 100. When the humidification module 200 is separated, the watering housing 800 may be separated from the clean module 100 together with the water tank 30.

In order for a separation structure of the watering housing 800 and the watering motor 42, in this embodiment, the power transmission module 600 may be designed to be separable.

Hereinafter, a power transmission module will be described in more detail.

FIG. 13 is a perspective view illustrating a first coupler shown in FIG. 12. FIG. 14 is a perspective view when seen from the lower side of FIG. 13. FIG. 15 is a side sectional view of FIG. 13. FIG. 16 is a perspective view of a second coupler shown in FIG. 8. FIG. 17 is a perspective view when seen from the lower part of FIG. 16. FIG. 18 is a side sectional view of FIG. 16. FIG. 19 is an enlarged view of D shown in FIG. 8. FIG. 20 is an enlarged view of E shown in FIG. 8. FIG. 21 is an enlarged view of F shown in FIG. 8. FIG. 22 is an enlarged view of G shown in FIG. 8. FIG. 23 is a cross-sectional view taken along a line K-K of FIG. 10. FIG. 24 is a cross-sectional view taken along a line L-L of FIG. 10.

The power transmission module 600 may include separable couplers 610 and 620 for delivering a torque of the watering motor 42 to the watering housing 800.

A coupler disposed in the clean module 100 and coupled to the watering motor 42 may be defined as the first coupler 610.

A coupler disposed in the humidification module 200 and separably coupled to the first coupler 610 may be defined as the second coupler 620.

One of the first coupler 610 and the second coupler 620 may have a male shape, and the other may have a female shape. In this embodiment the first coupler 610 may have a male shape, and the second coupler 620 may have a female shape. In this embodiment, the first coupler 610 may be separably coupled to and inserted into the second coupler 620. Unlike this embodiment, the second coupler 620 may be coupled to and inserted into the first coupler 610.

The watering motor 42 may be installed at the mounting body 120. The watering motor 42 may be located over and spaced from the blower motor 22. The water tank 30 may be mounted inside the mounting body 120. When the water tank 30 is placed on the mounting body 120, the first and second couplers 610 and 620 may be power-transmittably connected.

The watering motor shaft 43 of the watering motor 42 may be disposed so as to face upward. The first coupler 610 may be installed on the upper end of the watering motor shaft 43.

The mounting body 120 may include a mounting inner body 122 where the water tank 30 is mounted, a mounting outer body 128 coupled to the mounting inner body 122, disposed outside the mounting inner body 122, and forming the appearance of the base body 110 as coupled to the lower body 130, a mounting guide 124 disposed between the mounting inner body 122 and the mounting outer body 128 and guiding air to the upper side of the mounting inner body 122, and an outer visual body 124 coupled to the mounting outer body 128, formed of a transparent material, and disposed outside the visual body 120.

The first coupler 610 may be disposed at the mounting inner body 122. The first coupler 610 may be disposed inside the mounting inner body 122. The first coupler 610 may be disposed at the mounting inner body 122 and exposed upwardly.

The first coupler 610 may be manufactured in a form that an upper section is narrow and a lower section is wide. The first coupler 610 may be in a form such as a cone and a pyramid.

The first coupler 610 may be formed with a section that becomes narrower as it goes upwardly. A teeth shape may be formed at the outer circumferential surface of the first coupler 610. The teeth shape of the first coupler 610 may be disposed radially on the basis of a watering motor shaft 43. The teeth shape of the first coupler 610 may form a serration with respect to a circumferential direction of the watering motor shaft 43.

The first coupler 610 may include a first coupler body 612, a first serration 614 formed at the outer side surface of the first coupler body 612, a motor shaft coupling part formed inside the first coupler body 612, formed with an open lower side, and including a watering motor shaft 43 inserted thereinto, a motor shaft groove 616 formed at the motor shaft coupling part 615 and providing a coupling power with the watering motor shaft 43, and an entry prevention bump 618 for limiting an insertion depth of the watering motor shaft 43.

The upper surface of the first coupler 610 may be formed blocked. Therefore, the upper side surface of the first coupler body 612 is formed as a plane. Unlike this embodiment, the upper side surface of the first coupler body 612 may be formed open and may communicate with the motor shaft coupling part 615.

The first serration 614 may protrude in a radial direction with respect to the watering motor shaft 43. The first serration 614 may be formed extending long in a vertical direction. The first serration 614 may be disposed in plurality along a circumferential direction on the basis of the watering motor shaft 43. The first serration 614 may be formed inclined in a vertical direction. The first serration 614 has an inclination formed in a direction closer to the center axis of the watering motor shaft 43 as it goes upwardly.

The upper side end of the watering motor shaft 43 may be inserted into the motor shaft coupling part 615. The watering groove 616 may be assembled with the watering motor shaft 43 in a force fitting form. A protrusion (not shown) corresponding to the watering groove 616 may be formed at the watering motor shaft 43.

The entry prevention bump 618 may be supported by the watering motor shaft 43 and when the first coupler 610 is assembled, may limit an excessive movement.

The first coupler 610 may be inserted into the second coupler 620 and may deliver a torque when coupled.

The second coupler 620 may include a second coupler body 622, a coupler coupling part 625 formed inside the second coupler body 622, having a lower side formed open, and including the first coupler 610 inserted thereinto, a second serration 624 formed at the inner side surface of the second coupler body 622 and teeth-engaged with the first serration 614, a power transmission shaft coupling part 627 formed at the second coupler body 622 and including the power transmission shaft 640 coupled to deliver a torque to the watering housing 800, and a power transmission shaft groove 626 formed at the power transmission shaft coupling part 627 and providing a coupling power with the power transmission shaft 640.

The form of the coupler coupling part 625 may correspond to the appearance of the first coupler body 612. The first coupler body 612 may be inserted into the coupler coupling part 625. The first coupler 610 and the second coupler 620 may be separable vertically and form a mutual stopping in a rotational direction.

The power transmission shaft 640 may be disposed at the upper side of the second coupler 620 and inserted into the power transmission shaft coupling part 627. The power transmission shaft 640 may be coupled with the power transmission shaft groove 626 in a force fitting form.

The power transmission shaft groove 626 may be disposed in a radial direction on the basis of the watering motor shaft 43 and formed concavely.

In this embodiment, the power transmission shaft coupling part 627 and the coupler coupling part 626 may be formed as a connected space. Unlike this embodiment, the power transmission shaft coupling part 627 and the coupler coupling part 626 may be formed separately.

The cross-sectional area of the power transmission shaft coupling part 627 may be formed smaller than the cross-sectional area of the coupler coupling part 625. Through this, a step may be formed between the power transmission shaft coupling part 627 and the coupler coupling part 626 and may limit the movement of the first coupler 610.

The second serration 625 may have a form corresponding to the first serration 614 and they may be teeth-engaged with each other.

The watering motor shaft 43 may be located at the lower side of the first coupler 610 and the power transmission shaft 640 may be located at the upper side of the second coupler 62. The watering motor shaft 43 and the power transmission shaft 640 may be disposed in a line.

The first coupler 610 and the second coupler 620 may provide a clutch function. Only when the first coupler 610 and the second coupler 620 are coupled to each other, a torque of the watering motor shaft 43 may be delivered to the power transmission shaft 640.

Since the lower cross-sectional area of the coupler coupling part 625 is configured in a narrow form, when the humidification module 100 is mounted, the coupling of the first coupler 610 and the second coupler 620 may be easily implemented.

Even if the first coupler 610 and the second coupler 620 are not accurately arranged in a vertical direction, the position alignment may be implemented along the first and second serrations 614 and 624.

The power transmission module 600 may be for delivering a torque of the watering motor 42 to the watering housing 800. In this embodiment, in relation to the power transmission module 600, most of the configuration may be installed at the water tank 30 and a partial configuration such as the first coupler 610 may be installed at the mounting body 120.

The power transmission module 600 may include a power transmission housing 630 disposed inside the column 35 of the water tank 30, a power transmission shaft 640 disposed inside the power transmission housing 630, protruding upwardly as penetrating the power transmission housing 630, and providing a torque to the watering housing 800, a bearing 670 disposed between the power transmission shaft 640 and the power transmission housing 630, a second coupler 620 coupled to the lower end of the power transmission shaft 640 and delivering a torque to the power transmission shaft 640, and a first coupler 610 coupled to the watering motor shaft 43, detachably coupled to the second coupler 620, and delivering a torque of the watering motor shaft 43 to the second coupler 620 when coupled to the second coupler 620.

In this embodiment, in order to prevent the power transmission module 600 from contacting water, it may be installed inside the column 35.

In this embodiment, the power transmission housing 630, the power transmission shaft 640, the bearing 670, and the second coupler 620 may be disposed inside the column 35.

The power transmission shaft 640 may be installed to vertically penetrate the power transmission housing 630. The power transmission shaft 640 may rotate while penetrating the power transmission housing 630.

The power transmission housing 630 may be formed of a metallic material. The power transmission housing 630 may be formed of a high corrosion-resistant aluminum or brass.

The power transmission housing 630 may be installed inside the water tank 30. An insertion hole 39 for exposing the first coupler 610 may be formed at the water tank 30. The power transmission housing 630 may seal the upper side of the insertion hole 39.

The power transmission shaft 640 may penetrate the power transmission housing 630 vertically. The upper end of the power transmission shaft 640 may be coupled to the watering housing 800 and its lower end may be coupled to the second coupler 620.

In this embodiment, the second coupler 620 may be located at the undersurface upper side of the water tank 30, and may be disposed inside the power transmission housing 630. Unlike this embodiment, the second coupler 620 may be disposed at the undersurface lower side of the water tank 30.

The bearing 670 may be disposed between the power transmission housing 630 and the power transmission shaft 650. In this embodiment, the power transmission shaft 640 may be disposed to penetrate the bearing 670.

The power transmission housing 630 may include a bearing housing 650 having an open upper side and lower side, a housing cap 660 coupled to the upper side of the hearing housing 650, where the power transmission shaft 640 penetrates vertically, an shaft gasket 680 disposed between the housing cap 660 and the power transmission shaft 640 and insertingly fixed to the housing cap 660, and a housing elastic member 690 installed between the bearing 670 and the housing cap 660 to provide elasticity.

A bearing support end 641 for supporting the bearing 670 may be formed at the power transmission shaft 640. The bearing 670 may be supported by the bearing support end 641. The lower diameter of the bearing support end 641 may be formed greater than the upper diameter. The bearing 680 may be supported by the bearing support end 641 after inserted from the upper side of the power transmission shaft 640.

The housing cap 660 may be coupled to the upper end of the bearing housing 650. The housing cap 660 may be insertingly fixed to the bearing housing 650. The housing cap 660 may be formed in a ring shape. A hollow 661 may be formed inside the housing cap 660 and the power transmission shaft 640 may penetrate the hollow 661 vertically.

The housing cap 660 may include a housing cap body 662 supported by the bearing housing 650 and having a hollow 661 that the power transmission shaft 640 penetrates and a cap support part 664 formed at the housing cap body 662 and supporting the shaft gasket 680.

The cap support part 664 may protrude toward the power transmission shaft 640. The shaft gasket 680 may be supported by the cap support part 664.

The housing cap 660 may be disposed under the upper side of the column 35. A column opening part 39 that the power transmission shaft 640 penetrates may be formed at the column 35.

The housing cap 660 may support the shaft gasket 680 and allow the shaft gasket 680 to closely contact the inner upper side of the column 35.

The shaft gasket 680 may be formed of an elastic material.

The shaft gasket 680 may prevent the water of the water tank 30 from flowing into the column 35. Additionally, the shaft gasket 680 may prevent water from flowing into the bearing housing 650.

The shaft gasket 680 may include a gasket body 682 closely contacting the cap support part 664 and a gasket diaphragm 684 protruding from the gasket body 682 toward the power transmission shaft 640.

The gasket body 682 may be formed in a “

”-shaped section and the outer side and the lower side may be supported by the housing cap 660. The gasket diaphragm 684 may be formed integrally with the gasket body 682.

The gasket diaphragm 684 may closely contact the outer side of the power transmission shaft 640. The gasket diaphragm 684 may be formed in two in a vertical direction and prevent a water flow doubly.

The housing elastic member 690 may be disposed between the housing cap 660 and the bearing 670. The housing elastic member 690 may elastically support the housing cap 660 and the lower end may elastically support the bearing 670.

The housing elastic member 690 may press the bearing 670 downwardly through elastic force. The bearing 670 may be supported by the bearing support end 641 through the housing elastic member 690.

The housing elastic member 690 may minimize the vibration of the bearing 670 when the power transmission shaft 640 rotates.

Although the power transmission housing 630 is installed inside the column 35 in this embodiment, unlike this embodiment, the power transmission housing 630 may be exposed to the inside of the water tank 300.

In this embodiment, the power transmission shaft 640 may be installed extending long in a vertical direction. Since the power transmission shaft 640 is installed extending long in a vertical direction, the capacity of the water tank 30 may be easily increased to a desired capacity.

If the capacity of the water tank 30 is small, the second coupler 620 may be directly installed to the watering housing 800. In this case, a composition such as the power transmission shaft 640 and the bearing 670 may be omitted and accordingly, the structure becomes simpler.

If the capacity of the water tank 30 is large, the watering housing 800 having a long vertical length may be required. If the length of the watering housing 800 becomes long, vibration occurs during rotation. That is, when a torque is delivered to only the lower side of the watering housing 800, a deformation such as distortion of the watering housing 800 may be occur and there may be a speed difference at the upper side and the lower side of the watering housing 800.

By such a deformation or a speed difference, a large amount of vibration may occur from the watering housing 800. Especially, vibration may be further increased by the water drawn into the watering housing 800 and pumped. When the water drawn into the watering housing 800 is disposed eccentrically, greater vibration may occur.

In this embodiment, since the power transmission shaft 640 is coupled to each of the center of gravity and the upper end of the watering housing 800 as extending long in a vertical direction, the above issue may be resolved.

That is, in a structure as in this embodiment, when the height of the watering housing 800 increases as the height of the water tank 30 increases, vibration may be minimized.

Hereinafter, a watering housing according to a first embodiment of the present invention will be described in more detail.

FIG. 25 is a perspective view illustrating an installation state of a watering housing shown in FIG. 4. FIG. 26 is a front view of FIG. 25. FIG. 27 is a cross-sectional view taken along a line M-M of FIG. 26. FIG. 28 is a plan view of FIG. 25. FIG. 29 is an exploded perspective view illustrating a watering housing shown in FIG. 25. FIG. 30 is a perspective view when seen from the lower side of FIG. 29. FIG. 31 is a front view of FIG. 29. FIG. 32 is a cross-sectional view taken along a line N-N of FIG. 31.

The watering housing 800 may be a configuration for spraying water stored in the water tank 30. The watering housing 800 may be a component for spraying water stored in the water tank 30.

The watering housing 800 may rotate by a torque of a watering motor 42, and upon rotation, may draw water stored in the water tank 30 and then pump water upward. Water pumped into the watering housing 800 may be discharged through a nozzle 410.

A pump groove 810 may be formed at the inner side surface of the watering housing 800. The pump groove 810 may improve the pumping efficiency. The pump groove 810 may protrude from the inner side surface of the watering housing 800. The pump groove 810 may longitudinally extend in a vertical direction. The pump groove 810 may be radially disposed around the watering motor shaft 43.

The lower end of the watering housing 800 may be spaced from the undersurface of the water tank 30 by a certain gap to form a suction gap 801. Water of the water tank 30 may be drawn into the watering housing 800 through the suction gap 801.

The watering housing 800 may be downwardly opened. The watering housing 800 may have a cup shape. The watering housing 800 may have an inverted cup shape. A housing space 805 may be formed inside the watering housing 800.

The column 35 of the water tank 30 may be located inside the watering housing 800, and a power transmission module 600 may be disposed inside the column 35. The watering housing 800 may be disposed to cover the column 35.

The watering housing 800 may be formed such that the horizontal section thereof gradually expands in an upward direction. The column 35 may be formed such that the horizontal section thereof is gradually reduced in an upward direction. The shapes of the watering housing 800 and the column 35 may be implemented in order to efficiently pump water. The capacity of housing space 805 may gradually increase in an upward direction.

When the watering housing 800 rotates, drawn water may adhere closely to the inner circumferential surface of the watering housing 800 by a centrifugal force. The pump groove 810 formed on the inner circumferential surface of the watering housing 800 may provide a torque to water drawn to the inside.

A nozzle 410 may be disposed in the watering housing 800 to discharge drawn water to the outside. In this embodiment, the nozzle 410 may be disposed so as to discharge water in a horizontal direction. Pumped water may be discharged through the nozzle 410.

In this embodiment, water discharged out of the nozzle 410 may be sprayed to the visual body 210.

The number of nozzles 410 may vary with the design conditions. In this embodiment, the nozzle 410 may be disposed in plurality while having different heights from each other in the watering housing 800. A nozzle that is disposed at an upper side of the watering housing 800 may be defined as a upper nozzle, and a nozzle that is disposed at a middle side of the watering housing 800 may be defined as a lower nozzle.

Only when the watering housing 800 rotates at a high speed, water may be discharged out of the upper nozzle. The watering housing 800 may be disposed such that water is not discharged through the upper nozzle at a usual rotation speed. The lower nozzle may discharge water in all stages where a watering housing ordinarily operates.

The upper nozzle may be disposed in plurality. The lower nozzle may be disposed in plurality.

When the watering housing 800 rotates at a usual rotation speed, pumped water may rise at least higher than the lower nozzle. When the watering housing 800 rotates at a high speed, pumped water may rise to the same height as and higher than the upper nozzle.

The upper nozzle may be disposed in plurality in a circumferential direction of the watering housing 800. The lower nozzle may be also disposed in plurality in a circumferential direction of the watering housing 800.

When the watering housing 800 does not rotate, water may not be discharged through the nozzle 410. When a user operates only a clean mode (for example, a mode in which a clean module operates but a humidification module stops), the watering unit 40 may not operate, and only the blower unit 20 may operate. When a user operates only the humidification mode or operates the clean mode and the humidification mode, the watering housing 800 may rotate, and water may be discharged out of the nozzle 410.

The water discharged out of the nozzle 410 may be sprayed to the inner side surface of the visual body 210. Since the watering housing 800 rotates, the water discharged from the nozzle 410 may rotate while hitting the inner side surface of the visual body 210.

A user may visually check through the visual body 210 that water is sprayed. This spraying of water may mean that humidification mode is operating. Through the spraying of water, a user can intuitively check that humidification mode is operating.

Droplets may be formed on the visual body 210 by sprayed water, and the droplets may flow down.

In this embodiment, the watering housing 800 may have three parts. Unlike this embodiment, the watering housing 800 may be manufactured into one or two components.

The lower end of the watering housing 800 may be disposed to be spaced from the undersurface of the water tank 30 by a certain gap.

The watering housing 800 may include a first watering housing 820, a second watering housing 840, a watering housing cover 860, and a watering power transmission part 880.

The watering housing 800 may be assembled with the power transmission shaft 640, and may include a structure disposed therein and receiving a torque from the power transmission shaft 640. In this embodiment, in relation to the watering housing 800, the watering power transmission part 880 and the watering housing cover 860 may be assembled with the power transmission shaft 640 and receive a torque.

A configuration of the power transmission shaft 640 may be examined as follows.

In relation to the power transmission shaft 640, screw threads 643 and 644 may be formed at the upper end and the lower end, respectively, and bearing support ends 641 and 645 and a shaft support end 642 may be formed at the outer circumferential surface.

The screw thread 643 may be assembled with the watering housing cover 860. The lower end screw thread 644 may be assembled with the second coupler 620.

The bearing support ends 641 and 645 and the shaft support end 642 may be formed by varying the diameter of the power transmission shaft 640. The bearing support ends 641 and 645 may be for supporting a bearing. The shaft support end 642 may be for supporting the watering power transmission part 880.

The lower end screw thread 644 may be directly fastened to the second coupler 620. In this embodiment, a separate coupler coupling member 646 may be disposed at a power transmission coupling part 627 of the second coupler 620 and the power transmission shaft 640 and the second coupler 620 are coupled through the coupler coupling member 646.

A power transmission shaft groove 626 may be vertically formed at the outer circumferential surface of the coupler coupling member 646, and a screw thread (not shown) assembled with the lower end screw thread 644 may be formed at the inner circumferential surface.

Hereinafter, each configuration of the watering housing 800 will be described as follows.

The first watering housing 820 may have the upper and lower sides opened, and may have the pump groove 810 disposed therein. The lower end of the first watering housing 820 may be spaced from the undersurface of the water tank 30 by a certain gap to form a suction gap 801.

The second watering housing 840 may have the upper and lower sides opened, and may be assembled with the upper end of the first watering housing 820.

The watering housing cover 860 may be coupled to the upper end of the second watering housing 840, and may cover the upper surface of the second watering housing 840.

The watering power transmission part 880 may be connected to at least one of the first watering housing 820 and the second watering housing 840 to receive a torque of the power transmission module 600. In this embodiment, the watering power transmission part 880 may be connected to the first watering housing 820.

Unlike this embodiment, the first watering housing 820 and the second watering housing 840 may be integrally manufactured. Also, unlike this embodiment, the first watering housing 820 and watering housing cover 860 may be integrally manufactured.

The upper section of the first watering housing 820 may be larger than the lower section thereof. The first watering housing 820 may form an oblique in upward and downward directions. The first watering housing 820 may have a conical shape, a lower section of which is narrow.

The pump groove 810 may be disposed inside the first watering housing 820. The pump groove 810 may be formed in a vertical direction. The pump groove 810 may be radially disposed around the watering motor shaft 43. The pump groove 810 may be disposed in plurality, and may protrude to the axial center of the watering housing 800.

The lower end of the first watering housing 820 may be spaced from the undersurface of the water tank 30 to form the suction gap 801. The upper end of the first watering housing 820 may be coupled to the lower end of the second watering housing 840.

The first watering housing 820 and the second watering housing 840 may be assembled and disassembled. In this embodiment, the first watering housing 820 and the second watering housing 840 may be assembled through screw coupling. The first watering housing 820 may have a screw thread 822 formed on the outer circumferential surface of the upper side thereof, and the second watering housing 840 may have a screw thread 842 formed on the inner circumferential surface of the lower side thereof.

The screw thread 822 formed on the first watering housing 820 may be defined as a first thread 822, and the screw thread 842 formed on the second watering housing 840 may be defined as a second thread 842.

A first barrier 823 may be formed under the first thread 822 to restrict the movement of the second watering housing 840. The first barrier 823 may be formed in a circumferential direction of the first watering housing 820. The first barrier 823 may be formed into a strip shape, and may outwardly protrude from the first watering housing 820.

When the first watering housing 820 and the second watering housing 840 are assembled, the first barrier 823 may adhere closely to the lower end of the second watering housing 840. The first barrier 823 may outwardly protrude more than the first thread 822.

A first packing 825 may be disposed between the first thread 822 and the first barrier 823. The first packing 825 may prevent water from leaking to from the inside of the watering housing 800 to the outside. The first packing 825 may be formed of an elastic material. The first packing 825 may have a ring shape.

A packing installation rib 824 may be disposed to fix the location of the first packing 825. The packing installation rib may be disposed on the extension line of the first thread 822. The packing installation rib 824 may be a portion of the first thread 822.

Accordingly, the first thread 822 may be formed in plurality, and may be discontinuously distributed.

The lower nozzle 411 may be disposed at the first watering housing 820. In this embodiment, the lower nozzle 411 may be disposed in two. The two lower nozzles 411 may be disposed so as to direct the opposite direction to each other.

The lower nozzle 411 may communicate the inner and outer sides of the first watering housing 820. In this embodiment, the aperture area of the inside of the lower nozzle 411 may be larger than the aperture area of the outside of the lower nozzle 411.

A watering blade 850 may be formed on the outer circumferential surface of the second watering housing 840. The watering blade 850 may allow humidified air to flow. Additionally, the watering blade 850 may be formed in a direction for pressing the watering housing 800 downwardly. When the watering housing 800 rotates, the watering housing 800 may receive a pressure upwardly by the pumped water. The watering blade 850 may be formed to press the watering housing 800 downwardly.

When the watering housing 800 rotates, the watering blade 850 may attract ambient air and flow it downwardly. Air of the humidification flow passage 106 disposed in the watering housing 800 may mostly flow to the discharge flow passage 107 by the operation of the blower fan 24, but air around the watering blade 850 may flow in the opposite direction.

The watering blade 850 may locally form an air flow opposite to an air flow by the blower fan 24. The air flow by the watering blade 850 may have an effect of flowing water particles around the watering housing 800 into the water tank 30. The watering blade 850 may have an effect of generating a wind direction and attracting water particles of the humidification space 106.

Additionally, the air flow by the watering blade 850 may serve to gather dropping water toward the watering housing 800 when water drops from the water supply flow passage 109 to the upper part of the watering housing 800.

When the watering housing 800 rotates and water is supplied through the water supply flow passage 109, water may hit the surface of the watering housing 800 to be irregularly scattered. The air flow by the watering blade 850 may implement an effect of gathering water particles scattered during water supply toward the surface of the watering housing 800.

Upper nozzles 412 and 413 may be formed at the second watering housing 840. The upper nozzles 412 and 413 may spray water toward the visual body 210. In this embodiment, the two upper nozzles 412 and 413 may be disposed. The upper nozzles are defined as a first upper nozzle 412 and a second upper nozzle 413.

The first upper nozzle 412 and the second upper nozzle 413 may be formed facing an opposite direction based on the power transmission shaft 640.

In this embodiment, the first upper nozzle 412 and the second upper nozzle 413 may have a certain height difference. The first upper nozzle 412 and the second upper nozzle 413 may not be disposed at the same height.

Due to the height difference between the first upper nozzle 412 and the second upper nozzle 413, the location where water is sprayed to the visual body 210 may be differently set. Accordingly, when the watering housing 800 rotates, water sprayed from the first upper nozzle 412 and water sprayed from the second upper nozzle 413 may pass different paths.

A path of water hitting the inner side surface of the visual body 210 is defined as a spray line.

The spray line formed by the first upper nozzle 412 may be defined as a first spray line, and the spray line formed by the second upper nozzle 413 may be defined as a second spray line.

In this embodiment, water sprayed from the first upper nozzle 412 may pass any one location of the visual body 210, and after a certain time, water sprayed from the second upper nozzle 413 may pass another location having a different height. That is, two spray lines may be formed on the inner side surface of the visual body 210, and a user can more effectively recognize that water is sprayed through this visual show.

When water is discharged from the two upper nozzles disposed at a certain height, only one spray line may be formed. When the watering housing 800 rotates at a high speed, a phase difference may be very shortly formed even though the first and second upper nozzles 142 and 143 are located at the opposite direction. In this case, an optical illusion that water flows down from one spray line may be caused.

Meanwhile, when two spray lines are formed, locations which water hits may differ. Accordingly, sounds generated by water hitting may be different. That is, a sound generated from the first spray line and a sound generated from the second spray line may be different. Due to this sound difference, a user can acoustically check that the watering housing 800 is rotating.

The sound differences through the spray lines may have an effect of efficiently delivering the operation situation to visual or hearing impaired persons. Also, even in a dark environment, it may be easy to check that the humidification and air cleaning apparatus is operating.

Meanwhile, a water curtain inhibiting rib 870 may be disposed in the second watering housing 840 to inhibit a water curtain rotation flow. The water curtain rotation flow may mean a flow rotating along the inner side surface of the watering housing 800.

The pump groove 810 of the first watering housing 820 may be for forming the water curtain rotation flow, and the water curtain inhibiting rib 870 may be for inhibiting the water curtain rotation flow.

In the first watering housing 820, since water needs to be pumped up to the second watering housing 840, the water curtain rotation flow may be actively generated. However, in regard to water raised up to the second watering housing 840, when the water curtain rotation flow is not formed, water may be easily sprayed through the upper nozzles 412 and 413.

When a high-speed water curtain rotation flow is formed inside the second watering housing 840, water may not be discharged through the upper nozzles 412 and 413, and may flow along the inside.

Also, when a larger amount of water stays in the second watering housing 840, the vibration of the watering housing 800 may increase. Only when water pumped to the second watering housing 840 is quickly sprayed through the upper nozzles 412 and 413, the eccentricity of the watering housing 800 can be minimized, and thus the vibration according thereto can be minimized.

The water curtain inhibiting rib 870 may minimize the water curtain rotation flow, and thus may serve to minimize the eccentricity and vibration of the watering housing 800.

The water curtain inhibiting rib 870 may protrude from the inner side surface of the second watering housing 840 toward the power transmission shaft 640. The water curtain inhibiting rib 870 may be formed in a direction of crossing the water curtain rotation flow.

The water curtain rotation flow may form a spiral form or circular form along the inner side surface of the second watering housing 840, and thus the water curtain inhibiting rib 870 may be formed in upward and downward directions.

In this embodiment, the water curtain inhibiting rib 870 may be formed in a vertical direction. The water curtain inhibiting rib 870 may be disposed in plurality. In this embodiment, three water curtain inhibiting ribs 870 may be disposed. The plurality of water curtain inhibiting ribs 870 may be disposed at equal intervals based on the power transmission shaft 640.

In this embodiment, the water curtain inhibiting rib 870 may protrude by about 5 mm. The protrusion length of the water curtain inhibiting rib 870 may relate to the thickness of the water curtain rotation flow, and may be variously changed in accordance with embodiments.

The water curtain inhibiting rib 870 may be connected to the watering power transmission part 880 described later. As the water curtain inhibiting rib 870 is manufactured to be connected to the watering power transmission part 880, it is possible to simplify the mold.

The watering power transmission part 880 may be a component for delivering a torque of the power transmission shaft 640 to the watering housing 800.

In this embodiment, the watering power transmission part 880 may be connected to the second watering housing 840. Unlike this embodiment, the watering power transmission part 880 may also be connected to the first watering housing 820.

In this embodiment, the watering power transmission part 880 may be manufactured integrally with the second watering housing 840. Unlike this embodiment, the watering power transmission part 880 may be manufactured at the second watering housing 840.

The watering power transmission part 880 may include a bushing installation part 882 located at the axial center of the watering housing 800, and a watering connection part 884 connecting the bushing installation part 882 and the watering housing 800. In this embodiment, the bushing installation part 882, the watering connection part 884, and the second watering housing 820 may be integrally injection-molded.

The watering connection part 884 may be manufactured into a rib shape. The watering connection part 884 may be radially disposed based on the axial center, and may be disposed in plurality.

In this embodiment, the watering connection part 884 may be manufactured integrally with the water curtain inhibiting rib 870. The watering connection part 884 and the water curtain inhibiting rib 870 may be connected to each other.

The power transmission shaft 640 may be installed so as to penetrate the bushing installation part 882.

The lower side of the bushing installation part 882 may be opened. A bushing 90 may be inserted through the lower side of the bushing installation part 882.

The bushing installation part 882 and the bushing 90 may be separated in a vertical direction. The bushing installation part 882 and the bushing 90 may be subject to mutual stopping in a rotation direction.

For this, a bushing stopping part 93 may be formed on any one of the bushing installation part 882 and the bushing 90, and a bushing stopping groove 883 may be formed on the other. In this embodiment, the bushing stopping part 93 may be formed on the bushing 90, and the bushing stopping groove 883 may be formed in the bushing installation part 882.

The bushing stopping groove 883 may be formed in the inner side surface of the bushing installation part 882, and may have a concave shape. The bushing stopping part 93 may be formed on the outer surface of the bushing 90, and may have a convex shape.

The bushing stopping part 93 may be inserted and fitted into the bushing stopping groove 882.

The bushing 90 may be coupled to the power transmission shaft 640 of the power transmission module 600.

The bushing 90 may be coupled to the power transmission shaft 640 to receive a torque. The bushing 90 may be formed of a metallic material. When the bushing 90 is not formed of a hard metallic material, abrasion may occur, thereby causing vibration.

The bushing 90 may have a bushing shaft hollow 91 penetrated in a vertical direction. The power transmission shaft 640 may be inserted into the bushing shaft hollow 91.

When the watering housing 800 rotates, the bushing 90 may reduce vibration. The bushing 90 may be located on the power transmission shaft 640. In this embodiment, the bushing 90 may be located at the center of gravity of the watering housing 800. Since the bushing 90 is located at the center of gravity of the watering housing 800, the bushing 90 can significantly reduce the vibration of the watering housing 800 during the rotation.

The bushing 90 and the power transmission shaft 640 may be assembled by a fitting method. The bushing 90 may be supported by the power transmission shaft 640.

In order to support the bushing 90, the power transmission shaft 640 may include a shaft support end 642. The diameter at the upper side may be smaller than the diameter at the lower side based on the shaft support end 642.

The bushing 90 may be inserted through the upper end of the power transmission shaft 640.

In order to minimize abrasion, the shaft support end 642 may be formed into tapered, chamfered or rounded shape. When the shaft support end 642 is formed into a right-angled shape, abrasion may occur during the assembling process or the operation process.

When the shaft support end 642 is abraded, the bushing 90 may move, thereby causing vibration. Also, the shaft support end 642 is abraded, the bushing 90 may incline or move, and thus misalignment with the power transmission shaft 640 may occur. Also, when misalignment between the bushing 90 and the power transmission shaft 640, eccentricity may occur during rotation, and thus vibration may occur.

A bushing support end 92 supported by the shaft support end 642 may be formed at the bushing shaft hollow 91. The bushing shaft hollow 91 may have a smaller diameter at the upper side and a larger diameter at the lower side on the basis of the bushing support end 92.

In this embodiment, the shaft support end 642 and the bushing support end 92 may be configured to correspond to one point. Unlike this embodiment, the shaft support end 642 and the bushing support end 92 may be configured to correspond to two or more points. In this case, the shaft support end 641 may be disposed in plurality in the length direction of the power transmission shaft 640, and the bushing support end 92 may be disposed in plurality in the length direction inside the bushing shaft hollow 91.

Although the shaft support end 642 and the bushing support end 92 are disposed at the middle part in this embodiment, this is irrelevant to the positions and functions of the shaft support end 642 and the bushing support end 92. For example, the shaft support end 642 and the bushing support end 92 may be disposed at the upper side or the lower side of the bushing shaft hollow 91.

A shaft stopping surface 645 for forming a mutual stopping with the bushing 90 during rotation may be formed at the power transmission shaft 640. The shaft stopping surface 645 may be vertically formed at the outer circumferential surface of the power transmission shaft 640. The shaft stopping surface 645 may be connected to the shaft support end 642. In this embodiment, the shaft support end 642 may be disposed at the upper side of the shaft stopping surface 645.

A bushing stopping surface 95 corresponding to the shaft stopping surface 645 may be formed at the bushing 90. The bushing stopping surface 95 is a surface for forming a hushing shaft hollow 91. In this embodiment, the shaft stopping surface 645 and the bushing stopping surface 95 may be disposed in plurality. Unlike this embodiment, it may be regardless that the shaft stopping surface 645 and the bushing stopping surface 95 are disposed at only one point.

A mutual stopping of the shaft stopping surface 645 and the bushing stopping surface 95 and a mutual stopping of the shaft support end 642 and the bushing support end 92 are alignment means for aligning the bushing 90.

The shaft stopping surface 645 and the bushing stopping surface 95 may provide an alignment function with respect to a vertical direction. A mutual stopping of the shaft support end 642 and the bushing support end 92 may provide an alignment function with respect to a horizontal direction.

A mutual stopping of the shaft support end 642 and the bushing support end 92 and a mutual stopping of the shaft stopping surface 645 and the bushing stopping surface 95 may provide an alignment with respect to different directions.

Since an alignment means provides an alignment with respect to a plurality of directions, the bushing 90 can be more accurately installed and defective assembly can be minimized.

The watering housing cover 860 may be coupled to the upper side of the second watering housing 840 and seal the upper side of the second watering housing 840. The watering housing cover 860 may be screw-coupled to the second watering housing 840.

In this embodiment, the watering housing cover 860 may be assembled with the power transmission module 600. Unlike this embodiment, it may be regardless that the watering housing cover 860 is separated from the power transmission module 600. When the watering housing cover 860 is coupled to the power transmission shaft 640, the eccentricity and vibration of the watering housing 800 can be more effectively reduced.

The watering housing cover 860 may include a cover body 862 covering the upper opening of the second watering housing 840, a cover body border 863 downwardly extending from the cover body 862 and covering the upper end of the second watering housing 840, a packing installation rib 864 disposed under the cover body 862 and spaced from the cover body border 863 by a certain gap, a shaft fixing part 866 fixed to the power transmission shaft 640, and a reinforcing rib 868 connecting the shaft fixing part 866 and the packing installation rib 864.

When viewed from top, the cover body 862 may have a circular shape. The diameter of the cover body 862 may be larger than the diameter of the second watering housing 840.

The cover body border 863 may form the edge of the cover body 862. The cover body border 863 may be formed in a ring shape, and may be manufactured integrally with the cover body 862. The cover body border 863 may have a plurality of protrusions 861 formed on the outer surface thereof, and the protrusions 861 may be formed along the circumferential direction of 360 degrees of a circumference of the cover body border 863. The protrusion 861 may provide a grip feeling for a user when the watering housing cover 860 is separated.

The packing installation rib 864 may be located inside the cover body border 863, and may be spaced from the cover body border 863 by a certain distance. A second packing 865 may be disposed between the cover body border 863 and the packing installation rib 864.

The second packing 865 may seal a gap between the watering housing cover 860 and the second watering housing 840.

The cover body border 863 and the second watering housing 840 may be screw-coupled. In this embodiment, the watering housing cover 860 and the second watering housing 840 may be assembled through tight fitting.

The shaft fixing part 866 may be assembled with the power transmission shaft 640, and may receive a torque from the power transmission shaft 640.

The shaft fixing part 866 and the power transmission shaft may be screw-coupled. For this, a screw thread 643 for screw coupling with the watering housing cover 860 may be formed on the outer circumferential surface of the upper end of the power transmission shaft 640.

A screw thread for assembling with the power transmission shaft 640 may be formed on the shaft fixing part 866. In this embodiment, a shaft fixing member 867 may be disposed on shaft fixing part 866, and the shaft fixing member 867 may be integrally double injection-molded on the shaft fixing part 866. In this embodiment, a nut may be used for the shaft fixing member 867.

Unlike the watering housing cover 860, the shaft fixing member 867 may be formed of a metallic material. Since the power transmission shaft 640 is formed of a metallic material, a part screw-coupled to the power transmission shaft 640 also needs to be formed of a metallic material to prevent abrasion or damage during coupling. When the whole of the watering housing cover 860 is formed of a metallic material, or when the shaft fixing part 866 is formed of a metallic material, it may be desirable to form a screw thread on the shaft fixing part 866 itself.

The watering housing cover 860 may have a diameter larger than the diameter of the second watering housing 840. When viewed from upper side, only the watering housing cover 860 may be exposed, and the second watering housing 840 and the first watering housing 820 may not be exposed.

Accordingly, at least a portion of water supplied to the water supply flow passage 109 may drop down on the watering housing cover 860. When the watering housing 800 rotates, water dropping on the watering housing cover 860 may be outwardly scattered from the surface of the watering housing cover 860 in a radiation direction.

The rotating watering housing cover 860 may spray supplied waster along the rotation direction, and an effect as if water drops from an umbrella can be achieved. Particularly, water drops may be broken away from the plurality of protrusions 861 which are disposed in a circumferential direction of the watering housing cover 860.

Water sprayed from the watering housing cover 860 in a rotation direction may collide with the inner side surface of the visual body 210, and may create a rain view.

The rain view may mean a situation in which droplets formed on the inner side surface of the visual body 210 flow down like rain drops.

FIG. 36 is a perspective view illustrating the water tank humidification medium housing shown in FIG. 4. FIG. 37 is a perspective view when seen from the lower side of FIG. 36. FIG. 38 is a front view of FIG. 36. FIG. 39 is a cross-sectional view taken along a line B-B of FIG. 38. FIG. 40 is an enlarged view of the humidification medium fixing means shown in FIG. 39. FIG. 41 is an enlarged view of a raindrop prevention flow passage shown in FIG. 39. FIG. 42 is a partial exploded perspective view of FIG. 36. FIG. 43 is a perspective view when seen from the lower side of FIG. 42. FIG. 44 is a front view of FIG. 42. FIG. 45 is a cross-sectional view taken along a line D-D of FIG. 44.

Referring to the drawing, a water tank humidification medium housing will be described in more detail.

In this embodiment, a housing where the water tank humidification medium 51 in the humidification medium 50 is installed may be defined as a water tank humidification medium housing 300.

In this embodiment, the water tank humidification medium housing 300 may be disposed at the water tank 30. Especially, the water tank humidification medium housing 300 may be disposed inside the water tank inlet 31. In this embodiment, the water tank humidification medium housing 300 may be mounted on the visual body 210 and disposed inside the water tank 30. Unlike this embodiment, the water tank humidification medium housing 300 may be installed at the water tank 30.

The water tank humidification medium housing 300 may pass the air entered through the water tank inlet 31. The water tank humidification medium 51 may perform humidification on the passing air.

The water tank humidification medium housing 300 may supply moisture to flowing air as installing the water tank humidification medium 51 and also prevent water from overflowing from the water tank 30 as covering the upper side of the water tank 30.

For example, when an external impact is applied, water stored in the water tank 30 may flow out of the water tank 30. For example, when the humidification module 200 is separated and moved, water of the water tank 30 may flow out. For example, when the base body 110 may incline, water of the water tank 30 may flow out.

In order to prevent this, the water tank humidification medium housing 300 may be adhered closely to an upper edge of the water tank 30, and through this, water of the water tank 30 can be inhibited from overflowing.

When the water tank humidification medium housing 300 is mounted at the visual body 210, the lower end closely contacts the upper edge of the water tank 30. Unlike this embodiment, as the water tank humidification medium housing 300 is fastened or coupled to the upper end of the water tank 30, water overflowing may be prevented completely.

In this embodiment, by closely contacting a portion of the water tank humidification medium housing 300 to the water tank 30, overflowing may be prevented.

The water tank humidification medium housing 300 may include an inner medium frame 310 disposed inside the water tank humidification medium 51, supporting the water tank humidification medium 51, and including an inner medium inlet 311 where air passes, an outer medium frame 320 disposed outside the water tank humidification medium 51, supporting the water tank humidification medium 51, and including an outer medium inlet 321 where air passes, and a water overflowing prevention cover 330 coupled to at least one of the inner medium frame 310 or the outer medium frame 320 and preventing the water overflowing of the water tank 30 as closely contacting the water tank 30.

The water tank humidification medium 51 may be disposed between the inner medium frame 310 and the outer medium frame 320. The water tank humidification medium 51 may cover the water tank inlet 31. The water tank humidification medium 51 may be formed in a ring shape. In this embodiment, the water tank humidification medium 51 may be formed in a hopper shape with a small lower cross-sectional area and a large upper cross-sectional area. The water tank humidification medium 51 may be disposed slanted with respect to a vertical direction. The slant of the water tank humidification medium 51 may consider an air flowing direction.

The air flowing to the water tank inlet 31 through the connection flow passage 103 may form a flow slanted in the upper direction rather than a horizontal movement. The slantly-formed water tank humidification medium 51 may be disposed orthogonal to the air flowing direction.

When the air flow is orthogonal to the water tank humidification medium 51, it may be possible to prevent the air from concentrating on a specific portion of the water tank humidification medium 51 and the air may be passed through evenly in the entire area.

In order to fix the water tank humidification medium 51, a humidification medium fixing means for fixing the water tank humidification medium 51 may be formed on at least one of the outer medium frame 320 or the inner medium frame 310.

In this embodiment, the humidification medium fixing means may be configured with a protrusion and a groove.

The humidification medium fixing means may include a fixing protrusion 302 formed on one of the inner medium frame 310 or the outer medium frame 320 and a fixing hole 304 formed on the other one. The fixing protrusion 302 is inserted into the fixing hole 304.

In this embodiment, the fixing protrusion 302 may be formed on the outer medium frame 320, and the fixing groove 304 may be formed in the inner medium frame 310. Unlike this embodiment, they may be disposed opposite to their locations. The water tank humidification medium 51 may be disposed between the fixing protrusion 302 and the fixing groove 304, and the water tank humidification medium 51 may be fixed when the fixing protrusion 302 is fitted into the fixing groove 304.

The fixing protrusion 302 and the fixing hole 304 may prevent the water tank humidification medium 51 from moving between the inner medium frame 310 and the outer medium frame 320.

In this embodiment, a portion of the inner medium frame 310 may protrude upward to form the fixing groove 304 in order to the fixing groove 304.

The fixing groove 304 may be downwardly opened, and the fixing protrusion 302 may upwardly protrude.

It may have an effect that the inner medium frame 310 and the outer medium frame 320 are coupled by the coupling of the fixing protrusion 302 and the fixing hole 304.

An inner medium inlet 311 where air passes may be formed at the inner medium frame 310. An outer medium inlet 321 where air passes may be formed at the outer medium frame 320.

The inner medium inlet 311 and the outer medium inlet 321 may be formed to receive air in 360-degree all directions of a circumference thereof. The inner medium inlet 311 and the outer medium inlet 321 may be disposed facing each other.

The inner medium frame 310 may be formed with a large upper diameter and a small lower diameter. The outer medium frame 320 may be also formed with a large upper diameter and a small lower diameter. In this embodiment, the water tank humidification medium housing 300 may be formed in a hopper shape as a whole.

The outer medium frame 320 and the inner medium frame 310 may be coupled to each other in a force fitting manner. When the outer medium frame 320 and the inner medium frame 310 are forcingly fitted, the water tank humidification medium 51 may be fixed.

The overflowing prevention cover 330 may cover a portion of the upper side surface of the water tank 30 to prevent overflowing of the water tank 30. Also, the overflowing prevention cover 330 may serve to prevent water flowing down from the upper side from directly dropping on the water surface of the water tank 30.

The overflowing prevention cover 330 may be assembled with the lower sides of the outer medium frame 320 and the inner medium frame 310. The overflowing prevention cover 330 may be press-fitted to at least one of the outer medium frame 320 and the inner medium frame 310.

The outer medium frame 320 and the inner medium frame 310 which are assembled may be defined as a medium frame assembly.

The upper end of the medium frame assembly may be mounted on the visual body 210. The water flowing down along the visual body 210 may flow down along the medium frame assembly.

The overflowing prevention cover 330 may be disposed at a lower end of the medium frame assembly, and may support the medium frame assembly. The overflowing prevention cover 330 may temporarily store water that flows down, and may guide temporarily stored water to the inner side surface of the water tank 30. In this embodiment, the overflowing prevention cover 330 may provide a portion of the dropping water prevention flow passage.

The overflowing prevention cover 330 may guide water that flows down and may minimize the noise of dropping water. The overflowing prevention cover 330 may support at least a portion of the lower end of the medium frame assembly. In this embodiment, the overflowing prevention cover 330 may cover the whole of the lower end of the medium frame assembly, and water may be prevented from directly dropping down on the water surface of the water tank 30.

When viewed from top, the overflowing prevention cover 330 may be formed in a form of donut. The upper side surface of the overflowing prevention cover 330 may collect water flowing down from the medium frame assembly, and may guide water to the inner side surface of the water tank 30. The lower side surface of the overflowing prevention cover 330 may interrupt overflowing of the water tank 30 by blocking an inner edge of the water tank 30.

The inner medium frame 310 may include an inner upper frame 312 mounted on the visual body 210, an inner vertical frame 313 extending downwardly from the inner upper frame 312 and forming the inner medium inlet 311, and an inner lower frame 314 connected to the inner vertical frame 313 and mounted on the upper side surface of the water overflowing prevention cover 330.

The inner vertical frame 313 may be disposed in plurality between the inner upper frame 312 and the inner lower frame 314. The inner medium inlet 311 may be formed among the inner upper frame 312, the inner lower frame 314, and the inner vertical frame 313.

The inner upper frame 312 may be formed such that the upper side surface thereof faces the inside. In this embodiment, the upper side surface of the inner upper frame 312 may be formed into a curved surface, and may guide water, flowing down along the visual body 210, to the water tank humidification medium 51.

A handle 315 may be formed at the inner vertical frame 313. The handle 315 may be formed in plurality. The handle 315 may inwardly protrude from the inner vertical frame 313. A user may lift the whole of the water tank humidification medium housing 300 using the handle 315.

The inner upper frame 312 may be formed in a form of ring, and the inner side thereof may be opened. The inner lower frame 314 may be formed in a form of ring, and the inner side thereof may be opened.

The inner upper frame 312 may more outwardly protrude in a radial direction than the outer medium frame 320 so as to be placed in the lower guide groove 217 of the visual body 210.

The outer medium frame 320 may have a structure similar to the inner medium frame 310. Like the inner medium frame 310, the outer medium frame 320 may include an outer medium inlet 321, an outer upper frame 322, an outer vertical frame 323, and an outer lower frame 324.

A storage space 328 may be formed in the outer lower frame 324. Flowing-down water may be temporarily stored in the storage space 328. The storage space 328 may be formed in a form of ring. A vertical wall may be formed inside the outer lower frame 324, and may prevent water from flowing into the inside. Water of the storage space 328 may flow to an outer medium guide 325 described later.

Unlike the inner medium frame 310, the outer medium frame 320 may further include an outer medium guide 325 that connects the outer upper frame 322 and the outer lower frame 324.

The outer medium guide 325 may support the outer upper frame 322 and the outer lower frame 324. The outer medium guide 325 may have an empty space formed therein. The outer medium guide 325 may be connected to the storage space 328.

The outer medium guide 325 may discharge water of the water tank humidification medium 51 to an overflow prevention guide 330.

An outer medium guide hole 326 may be formed at a lower side end of the outer medium guide 325 to discharge internal water to the overflow prevention guide 330. The outer medium guide hole 326 may have a stepped structure formed in a radial direction. Accordingly, the outer medium guide hole 326 may be formed in an inward direction. The overflow prevention guide 330 may match the outer medium guide 325 in shape.

The undersurface of the outer medium guide 325 may be formed into an inclination surface 327. The inside of the inclination surface 327 may be high, and the outside thereof may be low. Accordingly, water of the outer medium guide 325 may be guided to the outer medium guide hole 326 along the inclination surface 327. The outer medium guide hole 326 may be disposed at the end of the inclination surface 327.

In this embodiment, three outer medium guides 325 may be disposed. The outer medium guides 325 may be radially disposed at an equal interval.

Water of the storage space 328 may be moved to the outer medium guide 325 by the self-weight of water. Water of the storage space 328 may flow in a circumferential direction, and then may move to the outer medium guide 325. Thereafter, water may be discharged to the overflowing prevention cover 330 through the outer medium guide hole 326.

Due to the structure of the storage space 328, the outer medium guide 325, the outer medium guide hole 326, and the overflowing prevention cover 330, water may be prevented from directly dropping on the water surface of the water tank 30 from the water tank humidification medium housing 300.

The water overflowing prevention cover 330 may include a cover part 332 for covering the upper part of the water tank 30, a barrier 334 connected to the cover part 332 and forming a housing space 338 as bent from the cover part 332, a cover insertion groove 335 formed at the cover part 332, where the outer medium guide 325 is inserted, and a cover hole 336 formed at the cover insertion groove 335 and communicating with the inside of the water tank 30 to drain water.

The cover part 332 may be disposed under the medium frame assembly. The cover part 332 may be disposed inside the water tank 30. The cover part 332 may cover a portion of the upper side of the water tank 30. In this embodiment, the cover part 332 may be formed along the inner side surface of the water tank 30.

The cover insertion groove 335 may be concavely formed at a lower side of the cover part 332. The outer medium guide 325 may be inserted into the cover insertion groove 335. The cover insertion groove 335 may be concavely formed in a vertical direction, and the outer medium guide 325 may be vertically inserted into the cover insertion groove 335.

The outer medium guide 325 inserted into the cover insertion groove 335 may be limited in lateral movement. The cover insertion groove 335 may be spaced from the outer medium guide hole 326 by a certain gap.

The cover hole 336 may be formed in the cover insertion groove 335. The cover hole 336 may be penetratively formed in a radial direction. The cover hole 336 may communicate with the inside of the water tank 30. The cover hole 336 may be formed toward the inner side surface of the water tank 30. Water discharged from the cover hole 336 may move along the inner side surface of the water tank 30.

The undersurface of the cover insertion groove 335 may be formed as an inclination surface 337. The inclination surface 337 may correspond to the inclination surface 327 of the outer medium guide 325.

A fitting groove 335 a may be formed in at least one of the cover insertion grooves 335, and a fitting part 325 a corresponding to the fitting groove 335 a may be formed on the outer medium guide 325.

The fitting part 325 a may downwardly protrude, and may be inserted into the fitting groove 335 a in a vertical direction. The fitting part 325 a and the fitting groove 335 a may be used as a location determination part that allows a user to check the coupling location of the outer medium frame 320 and the overflowing prevention cover 330. When the fitting part 325 a and the fitting groove 335 a do not correspond to each other, the outer medium frame 320 and the overflowing prevention cover 330 may not be assembled.

The cover part 302 may adhere closely to the inner side surface of the water tank 30. The cover part 302 may adhere closely to an upper edge of the water tank 30. The cover part 302 may overlap the upper end of the water tank 30. In this embodiment, the cover part 302 may adhere closely to the inner side surface of the water tank 30, and may adhere closely to the upper edge of the water tank 30.

The inside of the inclination surface 337 may be high, and the outside thereof may be low. The cover hole 336 may be disposed at the end of the inclination surface 337. Water discharged into the cover hole 336 may contact the inner side surface of the water tank 30. Water may be guided to the inner side surface of the water tank 30 through the inclination surfaces 327 and 337.

The cover part 332 may obliquely formed. The outside of the cover part 332 may be high and the inside thereof may be low. The inclination of the cover part 332 may inhibit water over the cover part 332 from flowing to the outside of the cover part 332. Water on the upper side surface of the cover part 332 may flow to the inside along the slope.

Water flowing along the upper side of the cover part 332 may be guided to the storage space 328. Accordingly, water flowing down along the upper side surface of the cover part 332 may be guided to the inner side surface of the water tank 30 through the storage space 328, the outer medium guide hole 326, and the cover hole 336. Thus, water that flows down may be prevented from directly dropping down on the water surface of the water tank 30.

The barrier 334 may form a reception space 338 together with the cover part 332. The reception space 338 may be formed under the cover part 332. When water of the water tank 30 fluctuates, the reception space 338 may receive water fluctuating along the inner side wall of the water tank 30, and may guide water to a lower side of the water tank 30.

The barrier 334 may include an inner barrier 331 and an outer barrier 333.

The inner barrier and 331 and the outer barrier 333 may downwardly bent from the cover part 332. The inner barrier 331 may be formed along the inner edge of the cover part 332, and may be downwardly bent. The outer barrier 333 may be formed along the outer edge of the cover part 332, and may be downwardly bent.

The outer barrier 333 may adhere closely to the inner side surface of the water tank 30.

The inner barrier 331 may adhere closely to the outer medium frame 320. More specifically, the inner barrier 331 may adhere closely to the outer lower frame 324.

The inner barrier 331 and the outer lower frame 324 may be coupled to each other. A stopping protrusion 339 may be formed on any one of the inner barrier 331 and the outer lower frame 324, and a stopping groove 329 may be formed in the other. In this embodiment, the stopping protrusion 339 may be formed on the inner barrier 331, and the stopping groove 329 may be formed in the outer lower frame 324.

In this embodiment, the overflowing prevention cover 330 may be located inside the water tank 30, and the outer barrier 333 may adhere closely to the inner side surface of the water tank 30.

Accordingly, when water stored in the water tank 30 fluctuates, water may rise along the inner side surface of the water tank 30, and then may flow along the outer barrier 333, the cover part 332, and the inner barrier 331. That is, water rising along the inner side surface of the water tank 30 may flow downward from the reception space 338, and then may be guided to the center of the water tank 30.

Thus, the overflowing prevention cover 330 may prevent the water tank 30 from overflowing.

Also, due to the configuration of the inner upper frame 312, the storage space 328, the outer medium guide hole 326, the cover part 332 and the cover hole 336, the water tank humidification medium housing 300 may provide the dropping water prevention flow passage that prevents water flowing down from the visual body 210 from directly dropping down on the water surface of the water tank 30.

A humidification and air cleaning apparatus according to an exemplary embodiment of the present invention has at least one of the following effects.

First, since a water overflow prevention cover is disposed at the upper part of a water tank, even if water of the water tank rolls, the water can be prevented from overflowing to the outside of the water tank.

Second, water flowing down from the upper side can be guided to the inner sidewall of a water tank through a raindrop prevention flow passage formed at a water overflow prevention cover.

Third, since a reception space is formed at the lower part of a water overflow prevention cover, it can receive water rising along the inner sidewall of a water tank and guide the received water into the water tank again.

Fourth, water of a water tank can be prevented from overflowing to the outside of the water tank through an outer barrier formed at a water overflow prevention cover.

Fifth, the direction of water rising along the inner sidewall of a water tank can be switched toward the lower side through an inner barrier formed at a water overflow prevention cover.

The effects of the present invention are not limited to the above; other effects that are not described herein will be clearly understood by the persons skilled in the art from the following claims.

While this invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. The preferred embodiments should be considered in descriptive sense only and not for purposes of limitation. Therefore, the scope of the invention is defined not by the detailed description of the invention but by the appended claims, and all differences within the scope will be construed as being included in the present invention. 

What is claimed is:
 1. A humidification and air cleaning apparatus comprising: a water tank to store water; a visual body disposed on the water tank and formed of a transparent material; a water tank inlet formed at the water tank to communicate with the inner and outer sides of the water tank; a water tank humidification medium disposed at the water tank inlet and formed of a water absorbing material to humidify air passing through the water tank inlet; and a watering housing rotatably disposed inside the water tank to spray water of the water tank, wherein the watering housing having, a lower nozzle disposed at the watering housing to spray water to the water tank humidification medium, and a upper nozzle disposed at the watering housing to spray water to the visual body.
 2. The humidification and air cleaning apparatus of claim 1, wherein the upper nozzle is located higher than the lower nozzle.
 3. The humidification and air cleaning apparatus of claim 1, wherein the upper nozzle is located higher than the water tank inlet.
 4. The humidification and air cleaning apparatus of claim 1, wherein the lower nozzle is located higher than the water tank.
 5. The humidification and air cleaning apparatus of claim 1, wherein the visual body is located higher than the water tank inlet.
 6. The humidification and air cleaning apparatus of claim 1, wherein water sprayed from the upper nozzle flows down to a lower side of the visual body and wets the water tank humidification medium.
 7. The humidification and air cleaning apparatus of claim 1, wherein water sprayed from the lower nozzle wets the water tank humidification medium, and then flows down to the water tank.
 8. The humidification and air cleaning apparatus of claim 1, wherein a lower end of the water tank humidification medium overlaps an upper end of the water tank, and the lower nozzle sprays water to the overlapping portion of the water tank humidification medium.
 9. The humidification and air cleaning apparatus of claim 1, further comprising a water tank humidification medium housing where the water tank humidification medium is installed, wherein the water tank humidification medium housing is separably mounted at the water tank.
 10. The humidification and air cleaning apparatus of claim 1, further comprising a water tank humidification housing where the water tank humidification medium is installed, wherein the water tank humidification medium housing is separably mounted at the visual body.
 11. The humidification and air cleaning apparatus of claim 1, further comprising a water tank humidification housing where the water tank humidification medium is installed, wherein an upper end of the water tank humidification medium housing is mounted at the visual body and a lower end of the water tank humidification medium housing overlaps an upper end of the water tank.
 12. The humidification and air cleaning apparatus of claim 11, wherein a lower end of the water tank humidification medium housing is located inside the water tank.
 13. The humidification and air cleaning apparatus of claim 11, wherein a storage space temporarily storing stored water is formed at a lower side of the water tank humidification housing and the lower nozzle sprays water to the storage space.
 14. The humidification and air cleaning apparatus of claim 13, wherein the storage space overlaps the water tank and is located at an inner side of the water tank.
 15. The humidification and air cleaning apparatus of claim 13, wherein the lower end of the water tank humidification medium is located at the storage space. 